Senior Full-Stack & Mobile Tech Lead — Freelance

EngiFlex; Brussel Hoofdstad; On-site; EUR 70,000 - 95,000; Full time

Benefits offered by this job

Company car

Career plan with education budget

Job summary

EngiFlex in Belgium is seeking an experienced Senior Full-stack and Mobile Developer with strong technical leadership to guide multi-team efforts. The role covers backend, frontend, mobile development and DevOps; you will own architecture and ensure quality across projects.

You should have 8+ years in software development, with hands-on experience in C#, .NET, React Native and cloud/Kubernetes environments. Freelance possible; attractive salary and benefits offered.

Qualifications

• 8+ years of software development experience.
• Experience across backend, frontend, mobile and DevOps.
• Ability to own technical architecture and guide teammates.
• Proven track record delivering complex software.

Responsibilities

• Define and maintain the technical architecture of software solutions with focus on scalability, security, performance.
• Translate business requirements into robust technical designs and select technologies.
• Contribute to software development, especially for complex components.
• Ensure code quality via reviews, standards and best practices.
• Provide technical guidance and support knowledge sharing.
• Identify risks, dependencies and debt, driving solutions.
• Work with heads of service and project managers to enable delivery.
• Participate in design, development, testing and delivery within cross-functional teams.
• Develop and maintain mobile applications; support testing, release and deployment.

Skills

Full-stack development

C#, .NET Framework/Core

Mobile development (React Native)

DevOps & containerization

REST APIs

Unit testing

Technical leadership

Code reviews & architecture

English communication

French or Dutch language skills

Tools

Microsoft Azure DevOps

Git

Docker

Kubernetes

React Native / Expo

NUnit / xUnit

IdentityServer / OpenID Connect

ASP.NET Core / Web API

Entity Framework

Job description

EngiFlex in Belgium is seeking an experienced Senior Full-stack and Mobile Developer with strong technical leadership to guide multi-team efforts. The role covers backend, frontend, mobile development and DevOps; you will own architecture and ensure quality across projects.

You should have 8+ years in software development, with hands-on experience in C#, .NET, React Native and cloud/Kubernetes environments. Freelance possible; attractive salary and benefits offered.